// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CONTENT_RENDERER_RENDER_VIEW_IMPL_H_
#define CONTENT_RENDERER_RENDER_VIEW_IMPL_H_

#include <stddef.h>
#include <stdint.h>

#include <deque>
#include <map>
#include <memory>
#include <set>
#include <string>
#include <vector>

#include "base/gtest_prod_util.h"
#include "base/id_map.h"
#include "base/macros.h"
#include "base/memory/weak_ptr.h"
#include "base/observer_list.h"
#include "base/process/process.h"
#include "base/strings/string16.h"
#include "base/timer/timer.h"
#include "build/build_config.h"
#include "cc/input/browser_controls_state.h"
#include "cc/resources/shared_bitmap.h"
#include "content/common/content_export.h"
#include "content/common/frame_message_enums.h"
#include "content/common/navigation_gesture.h"
#include "content/common/page_message_enums.h"
#include "content/common/view_message_enums.h"
#include "content/public/common/browser_controls_state.h"
#include "content/public/common/drop_data.h"
#include "content/public/common/page_zoom.h"
#include "content/public/common/referrer.h"
#include "content/public/common/renderer_preferences.h"
#include "content/public/common/web_preferences.h"
#include "content/public/renderer/render_view.h"
#include "content/renderer/render_frame_impl.h"
#include "content/renderer/render_widget.h"
#include "content/renderer/render_widget_owner_delegate.h"
#include "content/renderer/stats_collection_observer.h"
#include "ipc/ipc_platform_file.h"
#include "third_party/WebKit/public/platform/WebInputEvent.h"
#include "third_party/WebKit/public/platform/WebSecurityOrigin.h"
#include "third_party/WebKit/public/web/WebAXObject.h"
#include "third_party/WebKit/public/web/WebConsoleMessage.h"
#include "third_party/WebKit/public/web/WebDataSource.h"
#include "third_party/WebKit/public/web/WebElement.h"
#include "third_party/WebKit/public/web/WebFrameWidget.h"
#include "third_party/WebKit/public/web/WebHistoryItem.h"
#include "third_party/WebKit/public/web/WebIconURL.h"
#include "third_party/WebKit/public/web/WebNavigationType.h"
#include "third_party/WebKit/public/web/WebNode.h"
#include "third_party/WebKit/public/web/WebViewClient.h"
#include "ui/base/window_open_disposition.h"
#include "ui/gfx/geometry/rect.h"
#include "ui/gfx/geometry/rect_f.h"
#include "ui/surface/transport_dib.h"

#if defined(OS_ANDROID)
#include "content/renderer/android/content_detector.h"
#include "content/renderer/android/renderer_date_time_picker.h"
#endif

#if defined(COMPILER_MSVC)
// RenderViewImpl is a diamond-shaped hierarchy, with WebWidgetClient at the
// root. VS warns when we inherit the WebWidgetClient method implementations
// from RenderWidget.  It's safe to ignore that warning.
#pragma warning(disable : 4250)
#endif

namespace blink {
class WebDataSource;
class WebDateTimeChooserCompletion;
class WebGestureEvent;
class WebIconURL;
class WebMouseEvent;
class WebSpeechRecognizer;
class WebStorageNamespace;
class WebURLRequest;
struct WebActiveWheelFlingParameters;
struct WebDateTimeChooserParams;
struct WebMediaPlayerAction;
struct WebPluginAction;
struct WebPoint;
struct WebWindowFeatures;

#if defined(OS_ANDROID)
class WebHitTestResult;
#endif
} // namespace blink

namespace content {

class HistoryController;
class RendererDateTimePicker;
class RenderViewImplTest;
class RenderViewObserver;
class RenderViewTest;
class SpeechRecognitionDispatcher;
struct FaviconURL;
struct FileChooserParams;
struct ResizeParams;

namespace mojom {
    class CreateViewParams;
}

//
// RenderView is an object that manages a WebView object, and provides a
// communication interface with an embedding application process.
//
// DEPRECATED: RenderViewImpl is being removed as part of the SiteIsolation
// project. New code should be added to RenderFrameImpl instead.
//
// For context, please see https://crbug.com/467770 and
// http://www.chromium.org/developers/design-documents/site-isolation.
class CONTENT_EXPORT RenderViewImpl
    : public RenderWidget,
      NON_EXPORTED_BASE(public blink::WebViewClient),
      public RenderWidgetOwnerDelegate,
      public RenderView,
      public base::SupportsWeakPtr<RenderViewImpl> {
public:
    // Creates a new RenderView. Note that if the original opener has been closed,
    // |params.window_was_created_with_opener| will be true and
    // |params.opener_frame_route_id| will be MSG_ROUTING_NONE. When
    // |params.swapped_out| is true, |params.proxy_routing_id| is specified, so a
    // RenderFrameProxy can be created for this RenderView's main RenderFrame. The
    // opener should provide a non-null value for |show_callback| if it needs to
    // send an additional IPC to finish making this view visible.
    static RenderViewImpl* Create(
        CompositorDependencies* compositor_deps,
        const mojom::CreateViewParams& params,
        const RenderWidget::ShowCallback& show_callback);

    // Used by content_layouttest_support to hook into the creation of
    // RenderViewImpls.
    static void InstallCreateHook(RenderViewImpl* (*create_render_view_impl)(
        CompositorDependencies* compositor_deps,
        const mojom::CreateViewParams&));

    // Returns the RenderViewImpl containing the given WebView.
    static RenderViewImpl* FromWebView(blink::WebView* webview);

    // Returns the RenderViewImpl for the given routing ID.
    static RenderViewImpl* FromRoutingID(int routing_id);

    // May return NULL when the view is closing.
    blink::WebView* webview() const;

    // Returns the RenderWidget for this RenderView.
    RenderWidget* GetWidget() const;

    const WebPreferences& webkit_preferences() const
    {
        return webkit_preferences_;
    }

    const RendererPreferences& renderer_preferences() const
    {
        return renderer_preferences_;
    }

    void set_send_content_state_immediately(bool value)
    {
        send_content_state_immediately_ = value;
    }

    HistoryController* history_controller()
    {
        return history_controller_.get();
    }

    // Functions to add and remove observers for this object.
    void AddObserver(RenderViewObserver* observer);
    void RemoveObserver(RenderViewObserver* observer);

    // Returns the StatsCollectionObserver associated with this view, or NULL
    // if one wasn't created;
    StatsCollectionObserver* GetStatsCollectionObserver()
    {
        return stats_collection_observer_.get();
    }

    // Adds the given file chooser request to the file_chooser_completion_ queue
    // (see that var for more) and requests the chooser be displayed if there are
    // no other waiting items in the queue.
    //
    // Returns true if the chooser was successfully scheduled. False means we
    // didn't schedule anything.
    bool ScheduleFileChooser(const FileChooserParams& params,
        blink::WebFileChooserCompletion* completion);

#if defined(OS_ANDROID)
    void DismissDateTimeDialog();
#endif

    bool is_loading() const
    {
        return frames_in_progress_ != 0;
    }

    void FrameDidStartLoading(blink::WebFrame* frame);
    void FrameDidStopLoading(blink::WebFrame* frame);

    // Sets the zoom level and notifies observers.
    void SetZoomLevel(double zoom_level);

    double page_zoom_level()
    {
        return page_zoom_level_;
    }

    // Sets page-level focus in this view and notifies plugins and Blink's
    // FocusController.
    void SetFocus(bool enable);

    void AttachWebFrameWidget(blink::WebFrameWidget* frame_widget);

    void TransferActiveWheelFlingAnimation(
        const blink::WebActiveWheelFlingParameters& params);

    // Starts a timer to send an UpdateState message on behalf of |frame|, if the
    // timer isn't already running. This allows multiple state changing events to
    // be coalesced into one update.
    void StartNavStateSyncTimerIfNecessary(RenderFrameImpl* frame);

    // Synchronously sends the current navigation state to the browser.
    void SendUpdateState();

    // A popup widget opened by this view needs to be shown.
    void ShowCreatedPopupWidget(RenderWidget* popup_widget,
        blink::WebNavigationPolicy policy,
        const gfx::Rect& initial_rect);
    // A RenderWidgetFullscreen widget opened by this view needs to be shown.
    void ShowCreatedFullscreenWidget(RenderWidget* fullscreen_widget,
        blink::WebNavigationPolicy policy,
        const gfx::Rect& initial_rect);

    // Returns the length of the session history of this RenderView. Note that
    // this only coincides with the actual length of the session history if this
    // RenderView is the currently active RenderView of a WebContents.
    unsigned GetLocalSessionHistoryLengthForTesting() const;

    // Invokes OnSetFocus and marks the widget as active depending on the value
    // of |enable|. This is used for layout tests that need to control the focus
    // synchronously from the renderer.
    void SetFocusAndActivateForTesting(bool enable);

    // Change the device scale factor and force the compositor to resize.
    void SetDeviceScaleFactorForTesting(float factor);

    // Used to force the size of a window when running layout tests.
    void ForceResizeForTesting(const gfx::Size& new_size);

    void UseSynchronousResizeModeForTesting(bool enable);

    // Control autoresize mode.
    void EnableAutoResizeForTesting(const gfx::Size& min_size,
        const gfx::Size& max_size);
    void DisableAutoResizeForTesting(const gfx::Size& new_size);

    // IPC::Listener implementation ----------------------------------------------

    bool OnMessageReceived(const IPC::Message& msg) override;

    // blink::WebWidgetClient implementation ------------------------------------

    // Most methods are handled by RenderWidget.
    void show(blink::WebNavigationPolicy policy) override;
    void didHandleGestureEvent(const blink::WebGestureEvent& event,
        bool event_cancelled) override;
    void onMouseDown(const blink::WebNode& mouse_down_node) override;
    blink::WebLayerTreeView* initializeLayerTreeView() override;

    // TODO(lfg): Remove once WebViewClient no longer inherits from
    // WebWidgetClient.
    void closeWidgetSoon() override;
    void convertViewportToWindow(blink::WebRect* rect) override;
    void convertWindowToViewport(blink::WebFloatRect* rect) override;
    void didOverscroll(const blink::WebFloatSize& overscrollDelta,
        const blink::WebFloatSize& accumulatedOverscroll,
        const blink::WebFloatPoint& positionInViewport,
        const blink::WebFloatSize& velocityInViewport) override;
    void hasTouchEventHandlers(bool has_handlers) override;
    void resetInputMethod() override;
    blink::WebScreenInfo screenInfo() override;
    void setToolTipText(const blink::WebString&,
        blink::WebTextDirection hint) override;
    void setTouchAction(blink::WebTouchAction touchAction) override;
    void showVirtualKeyboard() override;
    void showUnhandledTapUIIfNeeded(const blink::WebPoint& tappedPosition,
        const blink::WebNode& tappedNode,
        bool pageChanged) override;
    blink::WebWidgetClient* widgetClient() override;

    // blink::WebViewClient implementation --------------------------------------

    blink::WebView* createView(blink::WebLocalFrame* creator,
        const blink::WebURLRequest& request,
        const blink::WebWindowFeatures& features,
        const blink::WebString& frame_name,
        blink::WebNavigationPolicy policy,
        bool suppress_opener) override;
    blink::WebWidget* createPopupMenu(blink::WebPopupType popup_type) override;
    blink::WebStorageNamespace* createSessionStorageNamespace() override;
    void printPage(blink::WebLocalFrame* frame) override;
    bool enumerateChosenDirectory(
        const blink::WebString& path,
        blink::WebFileChooserCompletion* chooser_completion) override;
    void didCancelCompositionOnSelectionChange() override;
    void SetValidationMessageDirection(base::string16* main_text,
        blink::WebTextDirection main_text_hint,
        base::string16* sub_text,
        blink::WebTextDirection sub_text_hint);
    void showValidationMessage(const blink::WebRect& anchor_in_viewport,
        const blink::WebString& main_text,
        blink::WebTextDirection main_text_hint,
        const blink::WebString& sub_text,
        blink::WebTextDirection hint) override;
    void hideValidationMessage() override;
    void moveValidationMessage(
        const blink::WebRect& anchor_in_viewport) override;
    void setStatusText(const blink::WebString& text) override;
    void setMouseOverURL(const blink::WebURL& url) override;
    void setKeyboardFocusURL(const blink::WebURL& url) override;
    bool acceptsLoadDrops() override;
    void focusNext() override;
    void focusPrevious() override;
    void focusedNodeChanged(const blink::WebNode& fromNode,
        const blink::WebNode& toNode) override;
    void didUpdateLayout() override;
#if defined(OS_ANDROID)
    bool didTapMultipleTargets(
        const blink::WebSize& inner_viewport_offset,
        const blink::WebRect& touch_rect,
        const blink::WebVector<blink::WebRect>& target_rects) override;
#endif
    blink::WebString acceptLanguages() override;
    void navigateBackForwardSoon(int offset) override;
    int historyBackListCount() override;
    int historyForwardListCount() override;
    blink::WebSpeechRecognizer* speechRecognizer() override;
    void zoomLimitsChanged(double minimum_level, double maximum_level) override;
    void pageScaleFactorChanged() override;
    virtual double zoomLevelToZoomFactor(double zoom_level) const;
    virtual double zoomFactorToZoomLevel(double factor) const;
    void draggableRegionsChanged() override;
    void pageImportanceSignalsChanged() override;
    void didAutoResize(const blink::WebSize& newSize) override;
    blink::WebRect rootWindowRect() override;
    void didFocus() override;

#if defined(OS_ANDROID)
    void scheduleContentIntent(const blink::WebURL& intent,
        bool is_main_frame) override;
    void cancelScheduledContentIntents() override;
    blink::WebURL detectContentIntentAt(
        const blink::WebHitTestResult& touch_hit) override;

    // Only used on Android since all other platforms implement
    // date and time input fields using MULTIPLE_FIELDS_UI
    bool openDateTimeChooser(const blink::WebDateTimeChooserParams&,
        blink::WebDateTimeChooserCompletion*) override;
    virtual void didScrollWithKeyboard(const blink::WebSize& delta);
#endif

    // RenderView implementation -------------------------------------------------

    bool Send(IPC::Message* message) override;
    RenderFrameImpl* GetMainRenderFrame() override;
    int GetRoutingID() const override;
    gfx::Size GetSize() const override;
    float GetDeviceScaleFactor() const override;
    WebPreferences& GetWebkitPreferences() override;
    void SetWebkitPreferences(const WebPreferences& preferences) override;
    blink::WebView* GetWebView() override;
    blink::WebFrameWidget* GetWebFrameWidget() override;
    bool ShouldDisplayScrollbars(int width, int height) const override;
    int GetEnabledBindings() const override;
    bool GetContentStateImmediately() const override;
    void Repaint(const gfx::Size& size) override;
    void SetEditCommandForNextKeyEvent(const std::string& name,
        const std::string& value) override;
    void ClearEditCommands() override;
    const std::string& GetAcceptLanguages() const override;
#if defined(OS_ANDROID)
    void UpdateBrowserControlsState(BrowserControlsState constraints,
        BrowserControlsState current,
        bool animate) override;
#endif
    void ConvertViewportToWindowViaWidget(blink::WebRect* rect) override;
    gfx::RectF ElementBoundsInWindow(const blink::WebElement& element) override;
    bool HasAddedInputHandler() const override;

    bool uses_temporary_zoom_level() const { return uses_temporary_zoom_level_; }

    // Please do not add your stuff randomly to the end here. If there is an
    // appropriate section, add it there. If not, there are some random functions
    // nearer to the top you can add it to.

protected:
    // RenderWidget overrides:
    blink::WebWidget* GetWebWidget() const override;
    void CloseForFrame() override;
    void Close() override;
    void OnResize(const ResizeParams& params) override;
    void OnSetFocus(bool enable) override;
    GURL GetURLForGraphicsContext3D() override;
    void OnOrientationChange() override;
    void DidCommitCompositorFrame() override;
    void DidCompletePageScaleAnimation() override;
    void OnDeviceScaleFactorChanged() override;
    void ResizeWebWidget() override;

    RenderViewImpl(CompositorDependencies* compositor_deps,
        const mojom::CreateViewParams& params);

    void Initialize(const mojom::CreateViewParams& params,
        const RenderWidget::ShowCallback& show_callback);
    void SetScreenMetricsEmulationParameters(
        bool enabled,
        const blink::WebDeviceEmulationParams& params) override;

    // Do not delete directly.  This class is reference counted.
    ~RenderViewImpl() override;

private:
    // For unit tests.
    friend class DevToolsAgentTest;
    friend class RenderViewImplScaleFactorTest;
    friend class RenderViewImplTest;
    friend class RenderViewTest;
    friend class RendererAccessibilityTest;

    // TODO(nasko): Temporarily friend RenderFrameImpl, so we don't duplicate
    // utility functions needed in both classes, while we move frame specific
    // code away from this class.
    friend class RenderFrameImpl;

    FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, RenderFrameMessageAfterDetach);
    FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, DecideNavigationPolicyForWebUI);
    FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest,
        DidFailProvisionalLoadWithErrorForError);
    FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest,
        DidFailProvisionalLoadWithErrorForCancellation);
    FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, ImeComposition);
    FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, InsertCharacters);
    FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, JSBlockSentAfterPageLoad);
    FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, LastCommittedUpdateState);
    FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, OnHandleKeyboardEvent);
    FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, OnImeTypeChanged);
    FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, OnNavStateChanged);
    FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, OnSetTextDirection);
    FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, OnUpdateWebPreferences);
    FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest,
        SetEditableSelectionAndComposition);
    FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, StaleNavigationsIgnored);
    FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest,
        DontIgnoreBackAfterNavEntryLimit);
    FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, UpdateTargetURLWithInvalidURL);
    FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest,
        GetCompositionCharacterBoundsTest);
    FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, OnNavigationHttpPost);
    FRIEND_TEST_ALL_PREFIXES(RenderViewImplScaleFactorTest,
        ScreenMetricsEmulationWithOriginalDSF1);
    FRIEND_TEST_ALL_PREFIXES(RenderViewImplScaleFactorTest,
        ScreenMetricsEmulationWithOriginalDSF2);
    FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest,
        DecideNavigationPolicyHandlesAllTopLevel);
#if defined(OS_MACOSX)
    FRIEND_TEST_ALL_PREFIXES(RenderViewTest, MacTestCmdUp);
#endif
    FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, SetHistoryLengthAndOffset);
    FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, NavigateFrame);
    FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, BasicRenderFrame);
    FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, TextInputTypeWithPepper);
    FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest,
        MessageOrderInDidChangeSelection);
    FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, SendCandidateWindowEvents);
    FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, RenderFrameClearedAfterClose);
    FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, PaintAfterSwapOut);
    FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest,
        SetZoomLevelAfterCrossProcessNavigation);
    FRIEND_TEST_ALL_PREFIXES(RenderViewImplScaleFactorTest,
        ConverViewportToScreenWithZoomForDSF);
    FRIEND_TEST_ALL_PREFIXES(RenderViewImplScaleFactorTest,
        GetCompositionCharacterBoundsTest);

    enum ErrorPageType {
        DNS_ERROR,
        HTTP_404,
        CONNECTION_ERROR,
    };

    // RenderWidgetOwnerDelegate implementation ----------------------------------

    void RenderWidgetDidSetColorProfile(
        const std::vector<char>& color_profile) override;
    void RenderWidgetFocusChangeComplete() override;
    bool DoesRenderWidgetHaveTouchEventHandlersAt(
        const gfx::Point& point) const override;
    bool RenderWidgetWillHandleMouseEvent(
        const blink::WebMouseEvent& event) override;

    // Old WebFrameClient implementations ----------------------------------------

    // RenderViewImpl used to be a WebFrameClient, but now RenderFrameImpl is the
    // WebFrameClient. However, many implementations of WebFrameClient methods
    // still live here and are called from RenderFrameImpl. These implementations
    // are to be moved to RenderFrameImpl <http://crbug.com/361761>.

    void didChangeIcon(blink::WebLocalFrame*, blink::WebIconURL::Type);

    static Referrer GetReferrerFromRequest(
        blink::WebFrame* frame,
        const blink::WebURLRequest& request);

    static WindowOpenDisposition NavigationPolicyToDisposition(
        blink::WebNavigationPolicy policy);

    void ApplyWebPreferencesInternal(const WebPreferences& prefs,
        blink::WebView* web_view,
        CompositorDependencies* compositor_deps);

    // IPC message handlers ------------------------------------------------------
    //
    // The documentation for these functions should be in
    // content/common/*_messages.h for the message that the function is handling.
    void OnExecuteEditCommand(const std::string& name, const std::string& value);
    void OnMoveCaret(const gfx::Point& point);
    void OnScrollFocusedEditableNodeIntoRect(const gfx::Rect& rect);
    void OnAllowBindings(int enabled_bindings_flags);
    void OnAllowScriptToClose(bool script_can_close);
    void OnCancelDownload(int32_t download_id);
    void OnClosePage();
    void OnClose();

    void OnShowContextMenu(ui::MenuSourceType source_type,
        const gfx::Point& location);
    void OnDeterminePageLanguage();
    void OnDisableScrollbarsForSmallWindows(
        const gfx::Size& disable_scrollbars_size_limit);
    void OnEnablePreferredSizeChangedMode();
    void OnEnableAutoResize(const gfx::Size& min_size, const gfx::Size& max_size);
    void OnDisableAutoResize(const gfx::Size& new_size);
    void OnEnumerateDirectoryResponse(int id,
        const std::vector<base::FilePath>& paths);
    void OnMediaPlayerActionAt(const gfx::Point& location,
        const blink::WebMediaPlayerAction& action);
    void OnPluginActionAt(const gfx::Point& location,
        const blink::WebPluginAction& action);
    void OnMoveOrResizeStarted();
    void OnReleaseDisambiguationPopupBitmap(const cc::SharedBitmapId& id);
    void OnSetActive(bool active);
    void OnSetBackgroundOpaque(bool opaque);
    void OnExitFullscreen();
    void OnSetHistoryOffsetAndLength(int history_offset, int history_length);
    void OnSetInitialFocus(bool reverse);
    void OnSetRendererPrefs(const RendererPreferences& renderer_prefs);
    void OnSetWebUIProperty(const std::string& name, const std::string& value);
    void OnSuppressDialogsUntilSwapOut();
    void OnUpdateTargetURLAck();
    void OnUpdateWebPreferences(const WebPreferences& prefs);
    void OnSetPageScale(float page_scale_factor);
    void OnForceRedraw(const ui::LatencyInfo& latency_info);
    void OnSelectWordAroundCaret();
    void OnAudioStateChanged(bool is_audio_playing);
#if defined(OS_ANDROID)
    void OnUndoScrollFocusedEditableNodeIntoRect();
    void OnUpdateBrowserControlsState(bool enable_hiding,
        bool enable_showing,
        bool animate);
    void OnExtractSmartClipData(const gfx::Rect& rect);
#elif defined(OS_MACOSX)
    void OnGetRenderedText();
#endif

    // Page message handlers -----------------------------------------------------
    void OnUpdateWindowScreenRect(gfx::Rect window_screen_rect);
    void OnSetZoomLevel(PageMsg_SetZoomLevel_Command command, double zoom_level);
    void OnPageWasHidden();
    void OnPageWasShown();

    // Adding a new message handler? Please add it in alphabetical order above
    // and put it in the same position in the .cc file.

    // Misc private functions ----------------------------------------------------
    // Check whether the preferred size has changed.
    void CheckPreferredSize();

#if defined(OS_ANDROID)
    // Launch an Android content intent with the given URL.
    void LaunchAndroidContentIntent(const GURL& intent_url,
        size_t request_id,
        bool is_main_frame);
#endif

#if defined(OS_WIN) || (defined(OS_POSIX) && !defined(OS_MACOSX))
    void UpdateFontRenderingFromRendererPrefs();
#else
    void UpdateFontRenderingFromRendererPrefs()
    {
    }
#endif

    // In OOPIF-enabled modes, this tells each RenderFrame with a pending state
    // update to inform the browser process.
    void SendFrameStateUpdates();

    // Update the target url and tell the browser that the target URL has changed.
    // If |url| is empty, show |fallback_url|.
    void UpdateTargetURL(const GURL& url, const GURL& fallback_url);

    // Tells the browser what the new list of favicons for the webpage is.
    void SendUpdateFaviconURL(const std::vector<FaviconURL>& urls);

    // Invoked from DidStopLoading(). Sends the current list of loaded favicons to
    // the browser.
    void DidStopLoadingIcons();

    // Coordinate conversion -----------------------------------------------------

    gfx::RectF ClientRectToPhysicalWindowRect(const gfx::RectF& rect) const;

    // RenderFrameImpl accessible state ------------------------------------------
    // The following section is the set of methods that RenderFrameImpl needs
    // to access RenderViewImpl state. The set of state variables are page-level
    // specific, so they don't belong in RenderFrameImpl and should remain in
    // this object.
    base::ObserverList<RenderViewObserver>& observers() { return observers_; }

    NavigationGesture navigation_gesture()
    {
        return navigation_gesture_;
    }
    void set_navigation_gesture(NavigationGesture gesture)
    {
        navigation_gesture_ = gesture;
    }

// Platform specific theme preferences if any are updated here.
#if defined(OS_WIN)
    void UpdateThemePrefs();
#else
    void UpdateThemePrefs()
    {
    }
#endif

    void UpdateWebViewWithDeviceScaleFactor();

    // Send the appropriate ack to be able discard this input event message.
    void OnDiscardInputEvent(const blink::WebInputEvent* input_event,
        const ui::LatencyInfo& latency_info,
        InputEventDispatchType dispatch_type);

    // ---------------------------------------------------------------------------
    // ADDING NEW FUNCTIONS? Please keep private functions alphabetized and put
    // it in the same order in the .cc file as it was in the header.
    // ---------------------------------------------------------------------------

    // Settings ------------------------------------------------------------------

    WebPreferences webkit_preferences_;
    RendererPreferences renderer_preferences_;

    // Whether content state (such as form state, scroll position and page
    // contents) should be sent to the browser immediately. This is normally
    // false, but set to true by some tests.
    bool send_content_state_immediately_;

    // Bitwise-ORed set of extra bindings that have been enabled.  See
    // BindingsPolicy for details.
    int enabled_bindings_;

    // If true, we send IPC messages when |preferred_size_| changes.
    bool send_preferred_size_changes_;

    // If non-empty, and |send_preferred_size_changes_| is true, disable drawing
    // scroll bars on windows smaller than this size.  Used for windows that the
    // browser resizes to the size of the content, such as browser action popups.
    // If a render view is set to the minimum size of its content, webkit may add
    // scroll bars.  This makes sense for fixed sized windows, but it does not
    // make sense when the size of the view was chosen to fit the content.
    // This setting ensures that no scroll bars are drawn.  The size limit exists
    // because if the view grows beyond a size known to the browser, scroll bars
    // should be drawn.
    gfx::Size disable_scrollbars_size_limit_;

    // Loading state -------------------------------------------------------------

    // The gesture that initiated the current navigation.
    // TODO(nasko): Move to RenderFrame, as this is per-frame state.
    NavigationGesture navigation_gesture_;

    // Timer used to delay the updating of nav state (see
    // StartNavStateSyncTimerIfNecessary).
    base::OneShotTimer nav_state_sync_timer_;

    // Set of RenderFrame routing IDs for frames that having pending UpdateState
    // messages to send when the next |nav_state_sync_timer_| fires.
    std::set<int> frames_with_pending_state_;

    // History list --------------------------------------------------------------

    // The offset of the current item in the history list.
    int history_list_offset_;

    // The RenderView's current impression of the history length.  This includes
    // any items that have committed in this process, but because of cross-process
    // navigations, the history may have some entries that were committed in other
    // processes.  We won't know about them until the next navigation in this
    // process.
    int history_list_length_;

    // Counter to track how many frames have sent start notifications but not stop
    // notifications. TODO(avi): Remove this once DidStartLoading/DidStopLoading
    // are gone.
    int frames_in_progress_;

    // UI state ------------------------------------------------------------------

    // The state of our target_url transmissions. When we receive a request to
    // send a URL to the browser, we set this to TARGET_INFLIGHT until an ACK
    // comes back - if a new request comes in before the ACK, we store the new
    // URL in pending_target_url_ and set the status to TARGET_PENDING. If an
    // ACK comes back and we are in TARGET_PENDING, we send the stored URL and
    // revert to TARGET_INFLIGHT.
    //
    // We don't need a queue of URLs to send, as only the latest is useful.
    enum {
        TARGET_NONE,
        TARGET_INFLIGHT, // We have a request in-flight, waiting for an ACK
        TARGET_PENDING // INFLIGHT + we have a URL waiting to be sent
    } target_url_status_;

    // The URL we show the user in the status bar. We use this to determine if we
    // want to send a new one (we do not need to send duplicates). It will be
    // equal to either |mouse_over_url_| or |focus_url_|, depending on which was
    // updated last.
    GURL target_url_;

    // The URL the user's mouse is hovering over.
    GURL mouse_over_url_;

    // The URL that has keyboard focus.
    GURL focus_url_;

    // The next target URL we want to send to the browser.
    GURL pending_target_url_;

    // Indicates whether this view overrides url-based zoom settings.
    bool uses_temporary_zoom_level_;

#if defined(OS_ANDROID)
    // Cache the old browser controls state constraints. Used when updating
    // current value only without altering the constraints.
    BrowserControlsState top_controls_constraints_;
#endif

    // Whether or not Blink's viewport size should be shrunk by the height of the
    // URL-bar.
    bool browser_controls_shrink_blink_size_;

    // The height of the browser controls.
    float top_controls_height_;

    // View ----------------------------------------------------------------------

    blink::WebView* webview_;

    // Cache the preferred size of the page in order to prevent sending the IPC
    // when layout() recomputes but doesn't actually change sizes.
    gfx::Size preferred_size_;

    // Used to delay determining the preferred size (to avoid intermediate
    // states for the sizes).
    base::OneShotTimer check_preferred_size_timer_;

    // Bookkeeping to suppress redundant scroll and focus requests for an already
    // scrolled and focused editable node.
    bool has_scrolled_focused_editable_node_into_rect_;
    gfx::Rect rect_for_scrolled_focused_editable_node_;

    // Used to indicate the zoom level to be used during subframe loads, since
    // they should match page zoom level.
    double page_zoom_level_;

    // Helper objects ------------------------------------------------------------

    RenderFrameImpl* main_render_frame_;

    // Note: RenderViewImpl is pulling double duty: it's the RenderWidget for the
    // "view", but it's also the RenderWidget for the main frame.
    blink::WebFrameWidget* frame_widget_;

    // The next group of objects all implement RenderViewObserver, so are deleted
    // along with the RenderView automatically.  This is why we just store
    // weak references.

    // The speech recognition dispatcher attached to this view, lazily
    // initialized.
    SpeechRecognitionDispatcher* speech_recognition_dispatcher_;

    std::unique_ptr<HistoryController> history_controller_;

#if defined(OS_ANDROID)
    // Android Specific ---------------------------------------------------------

    // Expected id of the next content intent launched. Used to prevent scheduled
    // intents to be launched if aborted.
    size_t expected_content_intent_id_;

    // List of click-based content detectors.
    std::vector<std::unique_ptr<ContentDetector>> content_detectors_;

    // A date/time picker object for date and time related input elements.
    std::unique_ptr<RendererDateTimePicker> date_time_picker_client_;

    // Whether this was a renderer-created or browser-created RenderView.
    bool was_created_by_renderer_;
#endif

    // Misc ----------------------------------------------------------------------

    // The current directory enumeration callback
    std::map<int, blink::WebFileChooserCompletion*> enumeration_completions_;
    int enumeration_completion_id_;

    // The SessionStorage namespace that we're assigned to has an ID, and that ID
    // is passed to us upon creation.  WebKit asks for this ID upon first use and
    // uses it whenever asking the browser process to allocate new storage areas.
    int64_t session_storage_namespace_id_;

    // All the registered observers.  We expect this list to be small, so vector
    // is fine.
    base::ObserverList<RenderViewObserver> observers_;

    // NOTE: stats_collection_observer_ should be the last members because their
    // constructors call the AddObservers method of RenderViewImpl.
    std::unique_ptr<StatsCollectionObserver> stats_collection_observer_;

    typedef std::map<cc::SharedBitmapId, cc::SharedBitmap*> BitmapMap;
    BitmapMap disambiguation_bitmaps_;

    bool has_added_input_handler_;

    // ---------------------------------------------------------------------------
    // ADDING NEW DATA? Please see if it fits appropriately in one of the above
    // sections rather than throwing it randomly at the end. If you're adding a
    // bunch of stuff, you should probably create a helper class and put your
    // data and methods on that to avoid bloating RenderView more.  You can
    // use the Observer interface to filter IPC messages and receive frame change
    // notifications.
    // ---------------------------------------------------------------------------

    DISALLOW_COPY_AND_ASSIGN(RenderViewImpl);
};

} // namespace content

#endif // CONTENT_RENDERER_RENDER_VIEW_IMPL_H_
